Dr. David Chhieng is the Chief Medical Officer of COLA. Before he joined COLA, he was a Professor, the Director of Anatomic Pathology and Pathology Informatics, and Vice Chair of Clinical Operation, of the Department of Pathology at the University of Washington in Seattle WA. Prior to that, he was the Director of Cytopathology at the Yale University and the Icahn School of Medicine at Mount Sinai.  

Dr. Chhieng obtained his MD degree from the University of Hong Kong and completed several master degrees in Business Administration, Health Informatics Management, Engineering Management, Legal Studies and Dispute Resolution. His fellowship training in Surgical Pathology and Cytopathology at the Memorial Sloan Kettering Cancer Center and New York University, respectively. He is board certified in Anatomic and Clinical Pathology, Cytopathology, and Clinical Informatics. He has been a practicing surgical and cytopathologist for 20+ years and in a directorship position for 10+ years.  

He has published 170+ peer-reviewed articles on the topics of cytopathology and surgical pathology. He has also co-authored several books and a number of book chapters. He has presented in many regional, national, and international pathology meetings and conferences. Dr. Chhieng has also served on a number of professional societies, including the ASCP Board of Directors; ASCP BOC Board of Governor. In addition, Dr. Chhieng has also served on the cytology test development and advisory committee of the American Board of Pathology, state commissioners for CAP Laboratory Accreditation Program, the Executive Board of ASC, and the work groups of the Bethesda System for Reporting Gynecology Cytology.